ZonedDateTime withZoneSameLocal() method in Java with Examples

The withZoneSameLocal() method of a ZonedDateTime class used to return a copy of this ZonedDateTime object by changing time-zone, without changing the local date-time if possible.The local date-time is only changed if it is invalid for the new zone, determined using the same approach as ofLocal(LocalDateTime, ZoneId, ZoneOffset). Syntax:

public ZonedDateTime withZoneSameLocal(ZoneId zone)

Parameters: This method accepts one single parameter zone the time-zone to change to.It should not be null. Return value: This method returns a ZonedDateTime based on this date-time with the requested zone. Below programs illustrate the withZoneSameLocal() method: Program 1:

Java

// Java program to demonstrate
// ZonedDateTime.withZoneSameLocal() method

import java.time.*;

public class GFG {
    public static void main(String[] args)
    {

        // create a ZonedDateTime object
        ZonedDateTime zonedDT
            = ZonedDateTime
                  .parse(
                      "2018-12-06T19:21:12.123+05:30[Asia/Calcutta]");

        // print ZonedDateTime
        System.out.println("ZonedDateTime of Calcutta: "
                           + zonedDT);

        // apply withZoneSameLocal()
        ZonedDateTime zonedDT2
            = zonedDT.withZoneSameLocal(
                ZoneId.of("Pacific/Fiji"));

        // print ZonedDateTime after withZoneSameLocal()
        System.out.println("ZonedDateTime of Fuji: "
                           + zonedDT2);
    }
}

Output:

ZonedDateTime of Calcutta: 2018-12-06T19:21:12.123+05:30[Asia/Calcutta]
ZonedDateTime of Fuji: 2018-12-06T19:21:12.123+13:00[Pacific/Fiji]

Program 2:

Java

// Java program to demonstrate
// ZonedDateTime.withZoneSameLocal() method

import java.time.*;

public class GFG {
    public static void main(String[] args)
    {

        // create a ZonedDateTime object
        ZonedDateTime zonedDT
            = ZonedDateTime
                  .parse(
                      "2018-10-25T23:12:31.123+02:00[Europe/Paris]");

        // print ZonedDateTime
        System.out.println("ZonedDateTime of Calcutta: "
                           + zonedDT);

        // apply withZoneSameLocal()
        ZonedDateTime zonedDT2
            = zonedDT
                  .withZoneSameLocal(
                      ZoneId.of("Canada/Yukon"));

        // print ZonedDateTime after withZoneSameLocal()
        System.out.println("ZonedDateTime of yukon: "
                           + zonedDT2);
    }
}

Output:

ZonedDateTime of Calcutta: 2018-10-25T23:12:31.123+02:00[Europe/Paris]
ZonedDateTime of yukon: 2018-10-25T23:12:31.123-07:00[Canada/Yukon]

Reference: https://docs.oracle.com/javase/10/docs/api/java/time/ZonedDateTime.html#withZoneSameLocal(java.time.ZoneId)

ZonedDateTime withZoneSameLocal() method in Java with Examples

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